The Nexus 9000v switch is a free virtual edition of the very popular Nexus 9K switch. It is free to use and will run most of the features of a real Nexus. This post will detail how I run the Cisco Nexus 9000v switch on my Windows 10 laptop using Vagrant and Virtualbox, for an […]
Cisco Nexus 9000 Software Upgrade NX-OS Tutorial
Nexus 9000 software upgrade using my AirConsole Bluetooth Wireless Console Cable Each Nexus 9000 switch is shipped with Cisco NX-OS software. The NX-OS software consists of one NXOS image. The image begins with “nxos” e.g Software BIOS: version 07.59 NXOS: version 7.0(3)I2(5) BIOS compile time: 08/26/2016 NXOS image file is: bootflash:///nxos.7.0.3.I2.5.bin NXOS compile time: 1/13/2017 […]
Cisco VXLAN Configuration Lab using Nexus 9000V DCNM & Ansible
This post details my approach to setting up a POC lab to prove the operation of Nexus 9K switches doing VXLAN using BGP EVPN, it will also show how I deployed and verified the configurations and operation using Ansible. You will follow the process from the start and learn such things as “What is a […]
VXLAN Terminology
In this VXLAN tutorial, we will be going through all the acronyms and VXLAN terminology used when configuring and deploying a VXLAN network. VXLAN – Virtual Extensible LAN Next we need to differentiate between the terms underlay and overlay network. Underlay – This is the transport network between your switches, running a number of protocols, typically an […]
What is VXLAN? – Virtual Extensible LAN
VXLAN, Virtual Extensible LAN is an encapsulation protocol that runs an overlay network over an existing layer 3 infrastructure or underlay network. VXLAN ( RFC7348 ) is used in the Cisco ACI fabric and allows network engineers to scale out cloud computing while isolating application. It is not limited to Cisco and was developed between Arista, VMware […]
Cisco ACI Training
Cisco ACI Fundamentals In this Cisco ACI tutorial I will be cover all the fundamentals of Cisco Application Centric Infrastructure. I will explain all the elements of ACI and give a brief overview of the APIC, Tenants, EPGs, VRFs, Contracts, Bridge Groups, AEP’s and the fabric. ACI Terminology APIC – Application Policy Infrastructure Controller ACI […]
How to remove interface from vsan database Nexus 5548
Whilst setting up a couple Nexus 5548’s I came upon an issue where I had to remove an interface from the vsan database. vsan database vsan 1000 interface vfc1 vsan 1000 interface vfc2 vsan 1000 interface vfc3 vsan 1000 interface vfc4 vsan 1000 interface fc1/28 vsan 1000 interface fc1/29 Having never done this before I […]
Cisco Nexus 5548 SFP Validation Failed
During a recent Nexus deployment I came across a very small problem which was very easily solved. When doing a sh int brief on the Nexus 5548 I saw the following Eth1/17 1 eth access down SFP validation failed 10G(D) — Eth1/18 1 eth access down SFP validation failed 10G(D) — The SFP’s that are […]